Nitrogen input enhances microbial carbon use efficiency by altering plant-microbe-mineral interactions

doi:10.1111/gcb.16229

CORC > 植物研究所 > 中国科学院植物研究所 > 植被与环境变化国家重点实验室

	Nitrogen input enhances microbial carbon use efficiency by altering plant-microbe-mineral interactions
	Feng, Xuehui 1; Qin, Shuqi 1; Zhang, Dianye ; Chen, Pengdong 1,2; Hu, Jie 1; Wang, Guanqin 1; Liu, Yang ; Wei, Bin 1; Li, Qinlu 1; Yang, Yuanhe 1
刊名	GLOBAL CHANGE BIOLOGY
	2022
卷号	28 期号:16 页码:4845-4860
关键词	carbon use efficiency carbon-nitrogen interaction microbial growth microbial physiology mineral protection soil C accessibility
ISSN号	1354-1013
DOI	10.1111/gcb.16229
文献子类	Article
英文摘要	Microbial growth and respiration are at the core of the soil carbon (C) cycle, as these microbial physiological performances ultimately determine the fate of soil C. Microbial C use efficiency (CUE), a critical metric to characterize the partitioning of C between microbial growth and respiration, thus controls the sign and magnitude of soil C-climate feedback. Despite its importance, the response of CUE to nitrogen (N) input and the relevant regulatory mechanisms remain poorly understood, leading to large uncertainties in predicting soil C dynamics under continuous N input. By combining a multi-level field N addition experiment with a substrate-independent O-18-H2O labelling approach as well as high-throughput sequencing and mineral analysis, here we elucidated how N-induced changes in plant-microbial-mineral interactions drove the responses of microbial CUE to N input. We found that microbial CUE increased significantly as a consequence of enhanced microbial growth after 6-year N addition. In contrast to the prevailing view, the elevated microbial growth and CUE were not mainly driven by the reduced stoichiometric imbalance, but strongly associated with the increased soil C accessibility from weakened mineral protection. Such attenuated organo-mineral association was further linked to the N-induced changes in the plant community and the increased oxalic acid in the soil. These findings provide empirical evidence for the tight linkage between mineral-associated C dynamics and microbial physiology, highlighting the need to disentangle the complex plant-microbe-mineral interactions to improve soil C prediction under anthropogenic N input.
学科主题	Biodiversity Conservation ; Ecology ; Environmental Sciences
电子版国际标准刊号	1365-2486
出版地	HOBOKEN
WOS关键词	SOIL ORGANIC-MATTER ; FUMIGATION-EXTRACTION METHOD ; BIOMASS CALIBRATION ; STOICHIOMETRY ; DEPOSITION ; DIVERSITY ; TURNOVER ; FERTILIZATION ; UNCERTAINTY ; ADDITIONS
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	WILEY
WOS记录号	WOS:000804481900001
资助机构	National Natural Science Foundation of China [31825006, 31922054, 31988102, 42141006] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA26010101] ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program [2019QZKK0106, 2019QZKK0302] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences [Y2021031]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/28625]
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Key Lab Aquat Bot & Watershed Ecol, Wuhan Bot Garden, Wuhan, Peoples R China
推荐引用方式 GB/T 7714	Feng, Xuehui,Qin, Shuqi,Zhang, Dianye,et al. Nitrogen input enhances microbial carbon use efficiency by altering plant-microbe-mineral interactions[J]. GLOBAL CHANGE BIOLOGY,2022,28(16):4845-4860.
APA	Feng, Xuehui.,Qin, Shuqi.,Zhang, Dianye.,Chen, Pengdong.,Hu, Jie.,...&Chen, Leiyi.(2022).Nitrogen input enhances microbial carbon use efficiency by altering plant-microbe-mineral interactions.GLOBAL CHANGE BIOLOGY,28(16),4845-4860.
MLA	Feng, Xuehui,et al."Nitrogen input enhances microbial carbon use efficiency by altering plant-microbe-mineral interactions".GLOBAL CHANGE BIOLOGY 28.16(2022):4845-4860.